Hypothyroidism (underactive thyroid) — diagnosis and long-term care in Dubai
Also known as: Underactive thyroid
Hypothyroidism is an underactive thyroid gland. It causes tiredness, weight gain, cold intolerance, low mood, constipation and dry skin. Diagnosis needs a raised TSH with a low free T4 on repeated testing. Treatment is daily levothyroxine, titrated to symptoms and TSH, with lifelong monitoring.
- · Diagnosis needs TSH and free T4 — a single mildly abnormal TSH is not enough
- · Autoimmune (Hashimoto's) disease is the commonest cause
- · Treatment is once-daily levothyroxine on an empty stomach
- · TSH is rechecked 6–8 weeks after dose changes, then annually
- · Pregnancy, illness and certain medicines change dose needs
What hypothyroidism is
Hypothyroidism means the thyroid gland does not produce enough thyroid hormone. The pituitary gland responds by raising TSH. Most cases in the UAE and UK are autoimmune (Hashimoto's thyroiditis).
How common it is
Around 2–5% of adults, and more common in women and with increasing age.
Main symptoms
- · Persistent tiredness
- · Weight gain
- · Cold intolerance
- · Constipation
- · Dry skin and hair
- · Low mood or brain fog
- · Heavy periods
Less common symptoms
- · Slow pulse
- · Puffy face
- · Hoarse voice
- · Muscle aches
Causes
- · Autoimmune thyroiditis (Hashimoto's)
- · Post-thyroid surgery or radioiodine treatment
- · Iodine deficiency (rare in UAE)
- · Certain medicines (amiodarone, lithium)
- · Congenital hypothyroidism
Risk factors
- · Female
- · Family history of thyroid or autoimmune disease
- · Postpartum period
- · Type 1 diabetes or coeliac disease
Possible complications
- · Persistent tiredness and reduced quality of life
- · Elevated cholesterol
- · Infertility and pregnancy complications
- · Very rarely, myxoedema coma
How this condition is diagnosed
- · Raised TSH with low free T4 on repeated testing (overt hypothyroidism)
- · Raised TSH with normal free T4 (subclinical hypothyroidism) — decision to treat is individualised
- · Thyroid antibodies confirm autoimmune cause
Questions your doctor may ask
- · How long have symptoms been present?
- · Any menstrual, mood or bowel change?
- · Family history of thyroid disease?
- · Recent pregnancy or postpartum?
- · Any medicines that affect the thyroid?
Examination
- · Pulse and blood pressure
- · Thyroid palpation for goitre
- · Reflexes and skin
Blood tests
- · TSH and free T4
- · Thyroid antibodies (TPO)
- · Lipid profile
- · Full blood count
- · Vitamin B12 and ferritin
When specialist referral may be needed
- · Pregnancy or pre-conception planning
- · Suspected pituitary cause (low TSH and low T4)
- · Nodular goitre needing imaging
- · Refractory symptoms despite normal TSH
Treatment
Overview
- · Daily levothyroxine tablet on an empty stomach
- · Titrate dose to symptoms and TSH
- · Retest 6–8 weeks after any dose change
- · Annual TSH once stable
Medicines
- · Levothyroxine is first-line and safe when correctly monitored
- · Absorption is reduced by calcium, iron, PPIs and coffee — separate from levothyroxine
- · Dose usually rises in pregnancy — earliest possible testing is key
Do not stop or change any prescribed medicine without first discussing it with your clinician.
Lifestyle support
- · Take levothyroxine consistently, 30–60 minutes before food
- · Regular exercise and balanced diet
- · Address vitamin D and iron deficiencies where present
Monitoring and follow-up
- · TSH every 6–8 weeks after dose change
- · Annual TSH once stable
- · Earlier testing in pregnancy or illness
Prevention and risk reduction
- · No specific prevention for autoimmune disease
- · Screening in high-risk groups (postpartum, family history) enables earlier diagnosis
When to seek urgent help
- · Severe drowsiness, low body temperature and confusion — attend A&E (rare)
Dubai emergency services: 998. Attend the nearest emergency department for red flags.
How Aafiyah can help
Your options
- · Same-week TSH and free T4 with home phlebotomy
- · GP-led dose titration
- · Pre-conception and pregnancy management
- · Cardiovascular risk assessment
When a GP appointment is right
- · Tiredness, weight change or menstrual change lasting more than a few weeks
- · Family history and any new symptoms
- · Any planned pregnancy on levothyroxine
When a home doctor visit may suit
- · Nurse-led home phlebotomy suits people with mobility issues or busy schedules
Related pages
Related symptoms
Related conditions
Dubai and UAE context
Hypothyroidism is common in Dubai's adult population, particularly women. Home phlebotomy and rapid TSH turnaround make monitoring straightforward.
Frequently asked questions
Is levothyroxine for life?+
Usually yes. Hypothyroidism from Hashimoto's is permanent, and levothyroxine simply replaces what the gland no longer makes.
How soon will I feel better?+
Most people feel meaningfully better within 6–12 weeks of reaching the right dose.
Does diet cure it?+
No — diet does not replace levothyroxine, though addressing iron and vitamin D helps overall wellbeing.
References
- · NICE NG145 — Thyroid disease: assessment and management
- · British Thyroid Foundation guidance
- · NHS — Underactive thyroid
Medically reviewed by Dr Shahbaz Afzal, MBBS MRCGP — British-trained Family Medicine Consultant, Aafiyah Care Clinic.
Reviewed 2026-07-01. Next review due 2027-01-01.
This page is general information for adults living in or visiting Dubai. It is not a diagnosis or a substitute for a personal medical consultation. Do not stop or change prescribed treatment without medical advice.
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